I am not sure that the logic in the random tests in python 3.8 are working as expected. I am pretty sure that all outputs should have the input as the first item in the return list. However, on occasion it is saying that an empty list should be the first item in the return list.

given this input [91, 49, 59, 21]
I am getting this error:
[[91, 49, 59, 21], [91, 59], [91]] should equal [[], [91, 59], [91]]